Joseph Leadbeater
Hi Harnam, The first thing you need to find out, is what's causing the mould. This is usually a lack of natural ventilation together with damp air. This usually happens in bathrooms where there is a water source. It's quite unusual to find it in a bedroom. If you have done this with the vent and it is now dry then you should be able to remove the mould the way you have done in the past. Then repaint with a mould resistant coating.Kitchen and Bathroom paint should do it. 2 coats would be best. Make sure you keep the room ventilated as much as possible. Open the window and door regularly. Joseph
